Analysis of the field data of Xiamen-Chengdu Highway shows that the program can be used in automatic distribution of discontinuities and has a high accuracy and value in application.

The basic theory is introducded at first ,then some examples about application of the high density resistivity method in Hu?Rong highway survey are introduced ,and some advices about application of the high density resistivity metbod are suggested.

Taking constructing Hurongxi Expressway of Hubei Province as an example,the effect of different mixture sowing style,different plant species and different plant cover degree on soil erosion had been studied.

In order to made a study of law of development of side slope gully erosion of highway spoil ground,upgrowth characteristic and law of development of gully erosion and realation between intercolparis erosion and gully erosion had been studied in the spoil ground of constructing Hurongxi expressway of Hubei province.